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Subject[tip:perf/probes] perf probe: Fix bugs in line range finder
Commit-ID:  3cb8bc6ac95ff86147d11ee1d36d18e1ddf3637c
Gitweb: http://git.kernel.org/tip/3cb8bc6ac95ff86147d11ee1d36d18e1ddf3637c
Author: Masami Hiramatsu <mhiramat@redhat.com>
AuthorDate: Thu, 25 Feb 2010 08:35:27 -0500
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 25 Feb 2010 17:49:28 +0100

perf probe: Fix bugs in line range finder

Fix find_line_range_by_line() to init line_list and remove
misconseptional found marking which should be done when
real lines are found (if there is no lines probe-able,
find_line_range() should return 0).

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
LKML-Reference: <20100225133527.6725.52418.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/probe-finder.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 1b2124d..3e10dbe 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -788,6 +788,7 @@ static void find_line_range_by_line(struct line_finder *lf)
Dwarf_Addr addr;
int ret;

+ INIT_LIST_HEAD(&lf->lr->line_list);
ret = dwarf_srclines(lf->cu_die, &lines, &cnt, &__dw_error);
DIE_IF(ret != DW_DLV_OK);

@@ -848,8 +849,6 @@ static int linefunc_callback(struct die_link *dlink, void *data)
lr->start = lf->lno_s;
lr->end = lf->lno_e;
find_line_range_by_line(lf);
- /* If we find a target function, this should be end. */
- lf->found = 1;
return 1;
}
return 0;

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